The invention discloses a vehicle and a connecting structure of a vehicle top cover and an enclosing wall. The enclosing wall comprises an end wall and a side wall; the connecting structure comprises a positioning post, a position clamping element and a position limiting element; the positioning element is hinged to either the top cover or the enclosing wall; the position clamping element is arranged at the other one of the top cover and the enclosing wall; a clamp position is formed on the position clamping element; the positioning post can rotate into the clamp position around a hinging axial line and is limited in the clamp position by the position limiting element for positioning the top cover and the enclosing wall; or the position limitation of the position limiting element is relieved; the positioning post rotates to be leave away from the clamp position; and the position limiting of the top cover and the enclosing wall is relieved. The technical scheme has the advantages that when the top cover and the enclosing wall are fixed, only the positioning post needs to rotate; the operation is simple; in addition, the positioning post only needs to be clamped in the clamp position; when the clamp position and the positioning post are matched, high precision requirements are not needed; installing holes for a screw bolt to insert and install generally need to be equal to the screw bolt size in the prior art; the upper and lower installing holes need to be coaxially aligned, so that in the scheme, the use of positioning pins for positioning like that in the prior art is not needed; and the assembly efficiency is improved.